Composite colored particles may include resin particles carrying a positive electric charge on particle surfaces and dye-containing particles carrying a negative electric charge on particle surfaces, the resin particles and the dye-containing particles forming a composite through Coulomb force. A water-based ink composition may include such composite colored particles dispersed in a water-based medium. A writing instrument may contain the water-based ink composition. A method of producing such composite colored particles may include forming a composite by mixing a resin emulsion containing resin particles carrying a positive electric charge on particle surfaces and a colored resin dispersion containing dye-containing particles carrying a negative electric charge on particle surfaces.

A two-component polyurea compositions including a polyisocyanate component and a hardener component. The hardener component includes at least a derivative of aspartic acid and at least one salt hydrate with a decomposition temperature of between 30° C. and 150° C. This composition allows to be applied to a large area and/or thick layers or high volume casts and shows fast curing triggered by heat but long pot life at application temperature.

A two-component polyurea compositions including a polyisocyanate component and a hardener component. The hardener component includes at least a derivative of aspartic acid and at least one salt hydrate with a decomposition temperature of between 30° C. and 150° C. This composition allows to be applied to a large area and/or thick layers or high volume casts and shows fast curing triggered by heat but long pot life at application temperature.

It is known that panels moulded for structural use can be subject to undesirable levels of shrinkage and this can complicate their end use or a building made from them. It is an object of the invention to go at least some way to addressing this problem. Accordingly there is provided a method of significantly reducing panel shrinkage in the production of a structural building panel. The method involves spraying polyurethane foam onto a rigid open mould such that the foam substantially embeds mesh, which prevents or significantly reduces shrinkage of the polyurethane foam. A skin of polyurea is then sprayed over the polyurethane to enhance structural strength of the panel.

Disclosed is an eco-friendly adhesive coating agent composition having high adhesion properties and fast-curing properties by using a thiol-modified epoxy intermediate. The composition includes: a main material including 25 to 40 parts by weight of polyoxypropyleneamine, 20 to 30 parts by weight of a cross-linking agent, 10 to 30 parts by weight of the thiol-modified epoxy intermediate, 10 to 20 parts by weight of an inorganic filler, 5 to 10 parts by weight of a pigment, and 2 to 5 parts by weight of an additive; and a curing agent including 60 to 80 parts by weight of a rubber-modified epoxy resin, 20 to 40 parts by weight of a polyol, 10 to 30 parts by weight of the thiol-modified epoxy intermediate, and 4 to 10 parts by weight of an additive, with respect to 100 parts by weight of an isocyanate mixture.

Disclosed is an eco-friendly adhesive coating agent composition having high adhesion properties and fast-curing properties by using a thiol-modified epoxy intermediate. The composition includes: a main material including 25 to 40 parts by weight of polyoxypropyleneamine, 20 to 30 parts by weight of a cross-linking agent, 10 to 30 parts by weight of the thiol-modified epoxy intermediate, 10 to 20 parts by weight of an inorganic filler, 5 to 10 parts by weight of a pigment, and 2 to 5 parts by weight of an additive; and a curing agent including 60 to 80 parts by weight of a rubber-modified epoxy resin, 20 to 40 parts by weight of a polyol, 10 to 30 parts by weight of the thiol-modified epoxy intermediate, and 4 to 10 parts by weight of an additive, with respect to 100 parts by weight of an isocyanate mixture.

Disclosed is a composition having: an organosilane polymer, a polyamide polymer; and an abrasive aggregate. The organosilane is made by: reacting an amino-functional alkoxysilane with one or more polyisocyanates to form one or more adducts having an unreacted isocyanate group; and reacting the adducts with one or more polyfunctional amino- and/or hydroxyl compounds so that the polymer contains no unreacted isocyanate groups. The polyfunctional amino- and/or hydroxyl compound has a cycloaliphatic group or an aromatic group. The composition can be used to make a single-component polysiloxane non-skid/non-slip coating that is applied by rolling, spraying, or troweling and cures with atmospheric moisture.

Disclosed is a composition having: an organosilane polymer, a polyamide polymer; and an abrasive aggregate. The organosilane is made by: reacting an amino-functional alkoxysilane with one or more polyisocyanates to form one or more adducts having an unreacted isocyanate group; and reacting the adducts with one or more polyfunctional amino- and/or hydroxyl compounds so that the polymer contains no unreacted isocyanate groups. The polyfunctional amino- and/or hydroxyl compound has a cycloaliphatic group or an aromatic group. The composition can be used to make a single-component polysiloxane non-skid/non-slip coating that is applied by rolling, spraying, or troweling and cures with atmospheric moisture.

A system and method for manufacture of the system are provided. In one example, the system comprises a first component, a second component securing the first component to a portion of the system, and a flexible strip with an abrasion resistant coating including a copolymer. The first component or the second component includes a corrosion coating on an exterior surface and the flexible strip is interposed between a surface of the first or second component and the corrosion coating.

A microcapsule for use with an underwater adhesive includes a shell including nanoclay platelets and a polyurea product of an interfacial polymerization of a polyamine and an aromatic polyisocyanate. The microcapsule further includes a core composition encapsulated by the shell. The core composition includes a base catalyst for formation of a polyurethane, a polyol, and a hydrophilic solvent.